... yah, when you rely on the MC being too oblivious to the standards of people that aren't at the very top of the world... and the fact that he knows that he knows very little about them, but then tries to randomly decide what's normal...
The fact that he would easily spread high level arts without even thinking about the consequences...
It's like the noble that gave a gold coin to a peasant in the slums... to the noble, it was probably worth nothing; but to the peasant, it was a priceless treasure that made people attack him and cost him and his family members their life...
If you're going to make the MC this irresponsible and this stupid, then make him face the consequences and actually be yelled at...